1887

Abstract

A strictly anaerobic, Gram-stain-positive, non-motile and coccoid- or oval-shaped bacterium, designated strain KB1, was isolated from a faecal sample of a patient with diverticulitis in South Korea. Degeneracies in the 16S rRNA gene sequence of strain KB1 were resolved by cloning, which yielded five different sequences with heterogeneity. Phylogenetic analysis based on the 16S rRNA gene sequences showed that strain KB1 formed a monophyletic branch with species in the genus , with highest sequence similarity to the type strain of (97.7–98.9 %), followed by (97.5–98.1 %). Strain KB1 was able to grow at temperatures of between 15 and 42 °C, with optimal growth at 37 °C, and in the presence of 20 % dehydrated bile. Acetic acid, succinic acid, lactic acid and fumaric acid were produced by strain KB1 from Gifu anaerobic medium broth as metabolic fermentation end-products. The major cellular fatty acids of strain KB1 were C, C and C dimethyl aldehyde. The DNA G+C content was 46.3 mol%. The average nucleotide identity value between strain KB1 and the type strain of was 84.1 %. On the basis of polyphasic analysis, strain KB1 represents a novel species in the genus , for which the name sp. nov. is proposed. The type strain is KB1 (=KCTC 15618=JCM 32276).

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2018-04-01
2024-03-29
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